Aviation Decarbonization With sCO2 Jet Propulsion

The aviation industry faces a defining ultimatum: achieve net-zero carbon emissions by 2050 or face crippling regulatory penalties and shifting consumer backlash. While sustainable aviation fuels (SAFs) are a costly band-aid and battery-electric flight is weighed down by physics, the future belongs to radical thermodynamic efficiency.

We are proud to introduce a paradigm shift in aerospace engineering: the closed-loop Supercritical CO2 (sCO2) Brayton Cycle Jet Engine. By swapping air for a high-density, fluid-like gas, we are unlocking thermal efficiencies never before possible in a jet engine footprint.

High-Density sCO2 Propulsion

The technical breakthrough of the platform:

Extreme Power Density: Supercritical CO2 behaves with the density of a liquid but the flow properties of a gas. This allows us to shrink the turbomachinery footprint down to a fraction of the size of conventional air-breathing turbofans, leaving more room for payload or fuel.

Decoupled Heat Source Flexibility: Because it is a closed loop, the engine doesn’t care how the CO2 is heated. It seamlessly integrates with advanced sustainable heat sources—whether that is a ultra-compact hydrogen combustor, stored thermal energy, or next-gen compact nuclear reactors for defense applications.

Unrivaled Thermal Efficiency: Operating at 45–50% design cycle efficiency, this engine drastically outperforms traditional open-cycle gas turbines, squeezing every ounce of thrust out of the thermal energy source.

The Value Proposition

From Traditional Turbofan to Closed-Loop sCO₂ Turbine, Thermal Efficiency from ~35–40% to 45–50%, lower fuel consumption and extended flight ranges.

Core Engine Size, from baseline (Large) to 10x smaller core, reduced drag, lower weight, higher payload capacity.

Carbon Emissions, from high CO2 output to zero direct CO2 emissions, eliminates carbon taxation and satisfies environmental targets.

Lifecycle Re-use, from consumes ambient air to 100% closed-loop recovery, eliminates atmospheric ingestion risks (volcanic ash, dust, ice).

How it Works: The Closed-Loop Flow

Re-Pressurization: The sCO2 is highly compressed at optimal fluid density in a specialized compact compressor.

Regeneration: The fluid passes through a microchannel recuperator, capturing waste heat from the exhaust loop to pre-heat the incoming fluid.

Expansion & Thrust: The heat source rapidly energizes the fluid, driving the high-pressure sCO2 turbine which spins the main propulsion fan.

Cooling & Re-use: The hot gas passes back through the recuperator and a pre-cooler, returning to its high-density state to repeat the cycle infinitely. Nothing is wasted. Nothing is emitted.

It isn't just an engine; it is the future proofing of aviation. It has proven the cycle thermodynamics and validated the turbomachinery blueprints. The infrastructure shift is happening now, and the first movers will define the next century of flight!